#
# this need not be r#, you may use phony resource names,
# like "resource web" or "resource mail", too
#

resource drbd0 {
  
  protocol C;

  # what should be done in case the cluster starts up in
  # degraded mode, but knows it has inconsistent data.
  
  #incon-degr-cmd "echo '!DRBD! pri on incon-degr' | wall ; sleep 60 ; halt -f";

  startup {
    wfc-timeout  0;

    degr-wfc-timeout 120;    # 2 minutes.
  }

  disk {
    on-io-error   detach;
  }


  syncer {
    rate 100M;

    group 1;

    # Configures the size of the active set. Each extent is 4M, 
    # 257 Extents ~> 1GB active set size. In case your syncer
    # runs @ 10MB/sec, all resync after a primary's crash will last
    # 1GB / ( 10MB/sec ) ~ 102 seconds ~ One Minute and 42 Seconds.
    # BTW, the hash algorithm works best if the number of al-extents
    # is prime. (To test the worst case performace use a power of 2)
    al-extents 257;

  }

  on power720-2 {
    device     /dev/drbd0;
    disk       /dev/sda4;
    address    149.44.174.138:7788;
    meta-disk  internal;

  }

  on power720-3 {
    device    /dev/drbd0;
    disk      /dev/sda4;
    address   149.44.174.139:7788;
    meta-disk internal;
  }
}